Tractor-drawn cultivator



Nov. 8, 1927.

F. T. COURT ET AL TRACTOR DRAWN CULTIVATOR Filed June 1. 1926 2 Sheets-Sheet 1 Gbtowu;

Nov. 8, 1927. 1,648,639

F. T. COURT ET AL TRACTOR DRAWN CULTIVATOR Filed June 1, 1926 2 Sheets-Sheet 2 Patented Nov. 8, 1927. '7

NITE-e srAres nix-Anna. 001mm, on INDEP ENCE,

A'ND ALBERT B. WALKER; or CEDAR RAPIDS; Iowa 7 IRACTORLDRAWN, oU'LrrvAroa:

Application filed June 1;

This invention relates to tractor-drawn eultivators, and theobject ot'the invention is t'o provide mechanism attachable to a tractor whereby three rows of corn maybe" cultivated at: once; the: whole areaembraced by the: (mamas-tan under the direct observation of the operator.

further obj'e'ot of the invention is to pro vi'de for all the adjustments and: movements of al l par ts offthe apparatus-as may be re-' qui red i111 multii-rowcultivation. These; ire clude lateral shifts to adjust the cu'ltivatore to varying; widths: ofi "corn-rows; treeand independent movements of the cultivator gangs; within certain limits lateral swinginn-of the straddlemow an son their front en pivotsesepai ately 01 concurrently; means for slii fting entire series of gang's: later: ally, with the: gangs trailing; and means for shifting one: ormore of the coupled gangs sidewise bodily; forea'nd" aft,- without the trailing; ac'tiom-ahove mentioned.

The: invention is fiully disclosed in the description and claims following, reference being-I had toithe accompanying. drawings; in which Figs 1 is a: side elevation: of a: cultivator embodying?thei'inventioni F-ig-I; 2- is a plan view: offthe same; Fig; 3: shows in perspec* tive details of the mech'a-nismfor shifting the;cultivator gangs laterally at the front ends; Fig: ei'shows a part ofthe: cultivator mounting: and shifting! apparatus to the left ofuthe seetion line of Fig. 2; looking towardcthe left: Fig; :5 isan: elevation show ingigdetailsof the mechanismforlitting: and depressingvthe coupled: gangs;

The apparatus -herein shown is specially adapted for connection with aawell-lrnow-n tractor, of-w hichl .a-z portion of the rear axle housing 51s shown together with the draft extension- 6,- the rear wheels :bein'gain dicated dottedl lines;

The' entire cultivator, with its supporting frame; controls and Toperators seat! is supported by the tractor: at'the properzh'eight, thus 'dispensing'with cultivator: wheels alto get-h era The: primary support for thecultivat-ors at the front end is a channel-bar 7 (and connection; which-will be: described presently) andva': parallel:- bar 8 disposed infront thereof; and rigidly attached: thereto by A reerwardly extending arms '81; To the bar 8. referred to hereafter as the yokeloam: bolted? a -reinforeingi angle bat 9 These are disposed. at an inclin to the hori zontal, as sl iown in Fig; 1',- so that thedraft of the cultivators will beat practically the same: angle, for a special reasor ithat Will be ex plaine-d presently. A

The yoke-bar is connected with the tractor draw-plate by a flat bar" 10 andby' dia onal brace-bars ll.- Another pair ofbraces 12, nearly horizontal, connect: the yoke-liar with the up'per part or" the; tractor diiieren tial housin at 5 This forms a} triangularly 19 ,-wher eb'y the-heightwf the gangs maybe regu'lated, and still allowa limited pivotal motion; These bearings connecti (in practice a'djustabl y, but shown conventionally here-1 in) withhorizontal' bearings 19? provided with similar adjusting" col'lars l9 These are attached at spaced intervals I to a cylin= cl rical draft-rod 20-. Between this draft-rod and the interior of thechannel-bar are" dis posed freely moving rollers 21 hollowed at 21 to partially embrace the draft' rod: The larger portion of the rollers run the trough of; 'the channel-bar,- as best shown in Fig. 45. The draftbar is" lield' again's't dis placement by stirrups22 which, however, haveno frictional contact with the draft b ar while the 'cult i'vator-is-in use} 7 As will be evident; this; construction per: mitsen'dwi'se movement of the digert bar, with 'it'" thefront-ends of all the connected cultivator gangs; whenever inthe o eratio oi *the ci'i'ltivator such a movement des'ir abl'e' or necessary; I In: practice it is often quiteas desire-hie to shift the gangs lateral-1y at the frontends; as at the-rear, to insure cleana'nd' thorough cultivation, without:- up

rooting of the planter :r'revisiezr is made-for this lateral-i shift ty the: feet ozt the operator I e p-stir er leagmeans for locking the same in desired positions, and means connecting said lever with a cultivator gang. 7 I

6. In a tractor-drawn wheel-less cultivator, a draft-rod to which the gangs are transversely attached, a fixed support along which the draft-rod is slidable endwise, a frame carrying said fixed support and a drivers seat, foot-levers operable from said seat, and intermediate levers and links connecting the foot-levers with the draft-rod, whereby the depression of a foot-lever shifts the draftrod laterally. I

7. In a tractor-drawn Wheel-less cultivator, a draft-rod to which the gangs are transversely and pivotally attached to swing sidewise, a fixed support along which the draftrod is slidable endwise, a lever carried by,

the draft-rod and connecting operably with a gang, and an independent lever carried by the supporting structure and connecting operably with the draft-rod, whereby the gangs may be shifted atthe front, or rear, or both. a

8. In a tractor-drawn. cultivator, a draft assembly, a cantilever supporting frame therefor, cranked rock-shafts, co-operating hand-levers, lifting and depressing means connecting said rock-shafts with gangarches, cultivator gangs with pierced crossplates, arches with legs slidable through said plates, and means adapted to hold the arches in vertical alignment with the lifting means while permitting a transverse rocking movement of the gangs.

In testimony whereof we aflix our signatures.

FRANK T. COURT. ALBERT B. 'WALKER. 

